[Valgrind-users] unhandled instruction bytes: 0xF3 0xF 0x52 0xE3

[Mathieu M. <mat...@ki...>]

==25853== Memcheck, a.k.a. Valgrind, a memory error detector for x86-linux.
==25853== Copyright (C) 2002-2003, and GNU GPL'd, by Julian Seward.
==25853== Using valgrind-2.0.0, a program supervision framework for 
x86-linux.
==25853== Copyright (C) 2000-2003, and GNU GPL'd, by Julian Seward.
==25853== Estimated CPU clock rate is 2794 MHz
==25853== For more details, rerun with: -v
==25853==
==25853== Warning: set address range perms: large range 134217728, a 0, v 0
==25853== Source and destination overlap in memcpy(0x2382570, 0x2382570, 4)
==25853==    at 0x360AE4: memcpy (mac_replace_strmem.c:95)
==25853==    by 0x19F287: (within /usr/X11R6/lib/libXt.so.6.0)
==25853==    by 0x19FBB1: _XtGetResources (in /usr/X11R6/lib/libXt.so.6.0)
==25853==    by 0x189042: (within /usr/X11R6/lib/libXt.so.6.0)
==25853==
==25853== Syscall param ioctl(generic) contains uninitialised or 
unaddressable byte(s)
==25853==    at 0x98B384: __GI___ioctl (in /lib/libc-2.3.2.so)
==25853==    Address 0xBFF17B90 is on thread 1's stack
==25853==
==25853== Conditional jump or move depends on uninitialised value(s)
==25853==    at 0x408A1D35: fglX11InitSurfaceManager (in 
/usr/X11R6/lib/modules/dri/fglrx_dri.so)
disInstr: unhandled instruction bytes: 0xF3 0xF 0x52 0xE3
Illegal instruction


What is this instruction ? Any idea how difficult this is to implement?

Thanks,
Mathieu

[Using valgrind 2.1 and ATI OpenGL (fglrx) driver]